Eric B (Customer) asked a question.
I have two P1AM-200's that I have accidently overwritten part of the firmware and it no longer gives a serial port nor appears as a memory device when I double click the reset. Is there another way to upload the firmware if the normal reset doesn't work?
Does the LED still do the breathing pattern after double clicking reset?
In what way did you overwrite the firmware?
The damaged P1AM-200 doesn't respond to a double click on the reset button, but the power light is on. The SD card light will illuminate when a card is inserted. It doesn't give a serial port option (such as ttyACM0) or as a memory device (sda1). I believe the main problem was not having the offset specified like below
.arduino15/packages/arduino/tools/bossac/1.9.1-arduino5/bossac -w -v -b -d -p /dev/ttyACM0 ardBuild/HelloWorld.ino.bin
I can successfully upload binaries with the below command, but I still have two unresponsive cpus. Any suggestions?
/home/arduino/.arduino15/packages/arduino/tools/bossac/1.9.1-arduino2/bossac -i -d --port=ttyACM0 -U -i --offset=0x4000 -w -v /home/arduino/ardbuild/HelloWorld.ino.bin -R
Thanks for your help
Ah I see, uploading directly using the bossac tool can definitely be risky. I believe you have overwritten the bootloader here which is why the CPUs are non-responsive over USB.
If you have an SWD programmer like an atmel ICE you can likely still recover these CPUs by re-uploading the bootloader file, but this would require some minor hardware modification that I cannot officially recommend.